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3.I haven't been drinking for three monthsHas been making breakfast since he graduatedMy grandad has been walking with the dog for a walk since he retiredOur cat has been eating only fish for twoo weeksMy parents aren't at home. They have neen travelling for 10 days4.My sister has been doingI haven't been eatingMary has been usingMy grandfather hasn't been smokingI haven't been drinking